Machine for manufacturing footwear.



PATENTED JUNE 19, 1906.

M. C. CLARK. l MACHINE ECB. MANUFACTURING ECCTWEAE.

APPLICATION FILED QUT. 18, 1905.

6 SHEETS-SHEET 1.

IIL

PATENT'ED JUNE 19, 1906.1

6 SHEETS-SHEET 2.

M. G. CLARK.,

` APPLICATION FILED 00T.18, 1905.

MACHINE FOR MANUFACTURING FOOTWEAR.l I

PATENTED JUNE 19, 1906.

M. G. CLARK. v MACHINE POR MANUFACTURING FOOTWEAR.

APPLICATION FILBD`00T-18. 1905. v s SHEETS-SHEET s.

PATENTED JUNE 19, 1906.

' M. C. CLARK.

MACHINE FCR MANUFACTURING FOOTWEAR.

APPLICATION FILED 00T.18, 1905.

6 SHEETS-SHEET 4 y PATENTED JUNE 19, 1909.

M. C. CLARK. A MACHINE ECE MANUFACTURING FOOTWEAR.

6 SHEETS-SHEET 5.

APPLICATION FILED 00T.18, 1905.

No. 823,927. v

M. C. CLARK. A l MACHINE POR MANUFACTURING FOOTWEAR.

APPLICATION FILED 00T.18, 1905.

PATENTED .TUNE 19, 1906.

' e SHEETS-SHEET e.

PATENT OFFICE.

` MAURICE C. CLARK, OF PROVIDENCE, RHODE ISLAND, AssIGNOR 'ro MARVELRUBBER COMPANY, A CORPORATION OE RHODE ISLAND.-

'.ivlAcHlNE Fon MANUFACTURING FooTwEA'n.

' To f1.7/l iff/"1.0111, if) may concern;

Be it known'that I, MAURICE C. CLARK, a citizen of the United States,and a resident of Providence, in the county of Providence and State ofRhode Island,have invented certain, -new and useful Improvements inMachines for Manufacturing Footwear, of which the following is aspecification.

This lnvention relates to a machine for manufacturing footwear, and hasparticular application to a mechanism adapted for use in the manufactureof rubber footwear.

My invention consists in the construction,

combination, and arrangement of parts set forth in and falling withinthe scope ofthe appended claims. A p

While I have in the present instance shown i and-described a desiredembodiment of my invention, I wish it to be understood that I do notconnemyself to all the precise details of construction and arrangementset forth, as there may be modification and variation in some respectswithout departing from the spirit of the-'invention or exceeding Fig.l 3is a view in front elevation.

the molds in a closed position, such v iew be- Fig. '1, such viewshowing in sectin the ing taken on the line w Ia: of Fig. 1. Fig. 6 is across-sectional view taken on the line y y of lower cross-head whichactuates the racks for o erating .the sole or top mold, and also s owsthe roller and its. adjacent parts emloyied in the actuation of theupper cross- Referring now to the accompanying drawings in detail, theletter A indicates the frame ofthe machine, which is constructed "in anysuitable manner. f v

The numeral 1 is a last conforming to the '15", having Specification ofLetters Patent.'

Application filed October 18, 1905. Serial No. 283.199.

Patented -June 19, 1906 ordinary rubber shoe, while 2 and 3 are theside-.mold parts, and 4 is a sole-mold part of a conformation adapted tomold the exterior of such shoe.

The steamchambers for imparting vulycanizing heat to the side-mold partsare 1ndicated by 5 and 6, while 7 is a steam-chamber for heating thesole-mold part. These steam-chambers are provided with the necessarysteam-fittings for the circulation of steam and which may be of anysuitable construction as theioccasion may demand.

In the present instance the `manner ofsupporting' and operating theside-mold parts 2 and 3 andA their steam-chambers 5 and 6 issubstantially as follows: Supported from the bed of the machine is arelativel large post 8, (shown in detail in Fig. 7,) sai post having athickened upper portion 9, -acting and serv,- ing' substantial y as apintle for the hin ing of the side molds, one of said side molds aving acentrally-apertured lug, asat 10 adapted to be inserted between theseparated bored lugs of the other side mold in the manner of an ordinary door-hinge, the enlarged portion 9 passing through the bore ofsaid lugs and acting as the pintle of an ordinary hinge. Surmountin thisenlarged portion 9 of the post an formed integral. therewith is thebearing member 12, having uprightslZ 12 lfor the support lof thetrunnion 13, on which rocks the top mold 4. From this construction itwill be noted that the three molds are' all hinged to a common post andmove with such post as a center, thus enabling me to obtain a verycompact, powerful, and economical arrangement. l

i The last A1, heretofore referred to and which is designed to hold theshoe during the process of mold' and operated 1n the following manner:ithin the frameof the machine ismounted the and vulcanizing, is su'ported chamber 14, preferably rectangular in crosssection, and Withinsald chamber -is adapted to travel the vertically-reciprocating post atits up er end the last 1. order that asts of di erent sizes and sha esmay be employed in connection with t 's machine to enable shoesofvarious shapes and sizes to be made thereby, I have conroo structed thetop of the post as is shown Fig. 4-'-that is to say,the last isremovably mounted on the reduced end 15, such reduced end fitting into asoclet 16, formed in theadvantages incident to the arrangement I havedevised will be obvious, as thelast with the shoe thereon may beremovedand anothersubstituted, so. that a saving of both time and laboris accomplished. To the lower end of the post 14 is secured the stem 16,which projects downward through an opening formed in the bottom of thechamber, the lportion of the stem outside said chamber aving ashouldered part 17, adapted to be engaged by the pawl 18, which ispivoted, as at 19, to the le`ver 20, said pawl having a handle 21 bymeans of which the awl may be moved out of engagement wit the shoulderedportion, thereby permitting the lowering of the post and the last. Asthe awl is pivoted to the lever 20, it is desira )le to ave some tensionmeans for holding it iirmly when in engagement with the stem, and tothis end I provide a suitable contractionspring 18", connecting the pawland the lever.

Within the chamber andv at the bottom thereof I provide a cushion- 22,of any suitable or elastic nature, the pu ose of which, briefly recited,is as follows: hen the post vcarrying the last is lowered prior to theclosing of the side molds around the shoe, it is` desirable that thebottom of the last and shoe which in the machine is uppermost, as willbe clearly seen in Fig. 4, should project a sli ht distance above the toedge of the side mo ds, so that when such moiils are brought togetherthe portion of the shoe around the-edge will be -firmly pressed by theside molds, while the upper portion of the vam or the instep will befree from ressure. ith the closing of the top mold, owever, applying, asit does, a direct downward ressure, the post, with the last and shoe,wil be depressed until such shoe occu ies its iinal`position -within themolds an4 pressure is had entirely around the surface ofthe shoe, thecushion compressing under the pressure exerted by the to mold andpermitting the post to bedepresse The reason 'that pressure is notrimarily placedupon the instep at the time of)the closlng of the sidemolds or at the same time as it is applied around the edge of the shoeis that l it has been found that when pressure was appliedsimultaneously to arts of the shoe and es ecially to the instep y theclosing of the si e molds the tendency has been for the material of theshoe to be pinched at the instep by the molds, so that the shoe iscreased and damaged by the pinching and A uckerin of the material andthe lining of tlie shoe; ut it pressure be not ap lied to the instepuntil the top mold is broug t down this is obviated saaea'? ed to have areciprocating movement longitudinally of the machine imparted thereto bythe reciprocation of the piston. 0n the upper portion of this cross-headI have arranged lugs 29 2?),spaccd apart and bored to receive the shaft30, which carries short triparms 31, loosely mounted on such sha1" t,said arms supporting at their outer ends the roller 33, adapted duringthe forward travel of the cross-head to contact with the depending ribs34 34 of the upper cross-head 35 and imparting a forward movement tosuch upper cross-head. The position of the ribs 34 34 of the up'fercross-head is clearly shown in Fig.`6. his u per cross-head 33 extendstransversely of fille machine and is mounted to slide in guidewaysformed bythe sidemembers 36 '36 of the framev of the machine. Throughthe medium of the long link members 37 37 I connect this upperportion tosliding blocks 38 38, arranged at op osite sides of the machine, each ofsaid siding ,blocks bein operatively and pivotally conthe uppercross-head in the position at the.

rear of the machine in order to close such molds, ower is imparted tothe piston to thrust tiie same forward, which will cause the lowercross-head to also move forward and through the connections abovedescribed the u per cross-head will travel toward the front of) themachine operating the long links, the sliding blocks, and the shortlinks to close the side molds snugly around the edge of theshoe, theupper portion of the vamp or the instep of the shoe, however, being freefrom the pressure of the molds by reason of the slight elevation of thelast before described. At this period it is desired that the to mold beclosed, and this is accomplished in t 1e following manner: To the lowercross-head I rigidi connect a pair of rack-bars 40, one at eacfi side ofthe machine, the teeth 41 of said bars engaging with pins or lugs 42.extending from the side of adjacent crank-disks, there being ITD two ofsuchdisks, each turning on a short stud-shaft 43, journaledin the bed ofthe machine. As the lower cross-head is thrust forward by the piston therack-bars engaging with the pins of the disk rotate the latter.Eccentrically secured to-the disk wheels are the connecting-rods 44,which are also secured to the shaft 45, extending through the post, andthe upper vampportion or instep of the shoe is snugly and smoothlyforced into its final molding and vulcanizing position within the mold.It will of course be evident that in the present machine the side moldsare closed about the shoe at a relamolds have reached their closedposition that tively earlier period than the top mold and it istherefore desirable that when the side movement of the same be'stayed sothat such molds will be stationary, while the movement of the top moldis continued to bring it to its final position. To accomplish thisstaying of the movement of the side molds, it

connected from the lower cross-head will remain`v stationary, andconsequently motion 4s' y forward movement causes the closln o the isnecessary that they 'be disengaged from connection with the motor, andthis is accomlished as follows: When the side molds have heen brought totheir closed position, the top molds still being open, the roller 33 yismoved or tripped out of engagement with I the lu s 34 of thc uppercross-head b the heel 31al o the pivoted arm 31 striking tv e stop 46,attached to the bedof the machine at a predetermined point. The uppercross-head then being diswill' cease to be' imparted to the side molds,while the piston ofthe motor continui'n its of the top and side moldstakes place as fol-- lows: The direction of the piston or the motor isreversed, andthe rack-arms being retracted reverse the direction of therotation of the pincarrying disk wheels,..whi`chcauses theconnecting-rods between .the wheel and the top mold to be pushed orforced upward, thus elevating-suc -t-op mold. As the vre-v traction ofthe piston continues the central 6o ortion of the shaft on the lowercrosshead contacts with the depending plate at the reajr oflthe u percross-head and pulls such upper cro'sscad; back towardthe rear of themachine to its original position. Thespring'48 holds the' s top .46 andpermits-the 'tracting stroke, the projection 24 on the lower cross-headstrikes the adjustable screw 23 in the heel 22 of the lever 20 andswings the for- The spring 49,

-ward part of such lever upward around the point 20a as a fulcrum, andas the dog or lpawl 18 is in engagement rwith the notch of the stem 14the post and lastwill be thrust upward, and the completed shoemay thenbe removed.

In the present construction I have shown al hydraulic motor foroperating the molds, the connections of such molds being indicated as awhole by the letter C. 'It will be understood, however, that anysuitable motor may b'e used for actuating the mechanisms moving themolds.

I-Iaving thus described my invention, what I claim, and desire tosecureby Letters Patent, is-

1. In a machine of the class described the combination with a frame, of`a last carried thereby, a support, and side molds, and a top moldhinged to said su port. 2. In a machine of the class described thecombination with a frame, of a last carried thereby, a support, aplurality of molds hinged tosaid su port, means for swinging certain ofsaid mo ds to and from the last, and means l for moving certain other ofthe molds vertically relative to the last.

3. The combination with the frame, of a last, a support mounted on theframe, oppositely-moving side molds hinged to said supv port, asole-mold also hin ed to the support, and means for moving al of saidmolds toward and from the last. 1

4.l The combination with the frame, and a last, of a forked postsupported by the frame, and a mold movably connected to the forkedportion of the post and adapted to be moved nto and out of contact witha shoe on the ast. Y

r '5. The combination with a frame, of 'a shoe-last, a support,oppositel -moving side molds, and a sole-mold movably connected to saidsup ort, and means for closing certain of said Amo ds about a shoeuponthe-last at a relatively;- earliertime than certain other of themolds.

roo

6. The-combination with the frame, of a i last, 'a su ortin ost, oositely-movin side molds Iiid aso eI-)mold 'ed to said su porting-post,and means for c osing the side molds about a shoe upon the last atrelatively earlier times than the sole-mold. l

7. In a machine of thev class described yt port, of side molds and a topmold, a sliding' 1 cross-head, a motor for moving the same, a

second 'sliding cross-head adjacent to the iirst-mentioned cross-head,means for iinparting movement from the first-mentioned cross-head to thesecond, power-transmitting top mold, and powertransmitting means betweenthe second cross-head and the side molds.

9. In a machine of the class described the combination with a frame, cfashoe-support thereon, a mold, and means for imparting movement to themold comprisin a reciprocating element, a rack connecte thereto, a

rotary member operated b said rack, and an molds, a reciprocating memberoperatively `'connected to saidloppositely-moving side molds, andpower-transmission means between the sole-mold-reciprocating member andthe side-mold.- reciprocatin whereby motion may besole-mold-reciprocating member to the sidemold-reciprocating member.

1 1. In a machine of the class described, the combination withthe frameand a shoe-support thereon, of a sole-mold, a motor, a reciprocatingmember operated by the motor, power-transmission means between thesolemember mold and the reciprocating member whereby' movement isimparted to such sole-mold, a plurality of oppositely-moving side molds,a reciprocating member operatively connected to said oppositely-movingside molds, powertransmitting means between the first reciprocatingmember and the second reciprocating member whereby motion is impartedfrom the first reciprocating` member to the l second reciprocatingmember, and means for vdisengaging the last-mentioned power-transthefirst-'mentioned` Initting means whereb member may continue its movementforward while the second member remains stationary.

12. The combination with the frame and a shoe-support thereon, of atopmold and side molds, a reciprocatingy member, power-transmittmg i.connecting the reciprocating imparte from the member with the top moldwhereby move- 6 5 ment is imparted to the latter, a second reciprocatingmember connected with the side molds, means for impartin movement fromthe first reciprocating mem er to the second reciprocating member tooperate the side molds, means for disengagin the powertransmitting meansbetween t e two reci rocating members to permit the side mol s to remainstationary while the top mold continues its movement, and means foropening the side molds with the retractive or opening 'movement of thetop mold. .means between the irst cross-head and the 13. The combinationwith al frame and a Ishoe-support thereon, of a sole-mold and sidemold', a. motor, a reciprocating member connected to said motor, meansinter osed between the reciprocatin member an the sole-` .ment from thefirst reciprocatin member to the second reciprocating mem er to closethe side molds, and means for openingthe side molds with the retractivemovement of the first-mentioned reciprocating member.

14. The combination with the trams and a shoe-support thereon, of aplurality of oppositely-moving side molds, a reciprocating member,flexible connections between the reciprocating member andA the sidemolds, a motor, and means interposed between the motor and thereciprocatmg member-for impartin movement to the'latter to open andclose t e side molds.

15. In a machine-of the 'class described, a post, a last carried by oneend of the post, and a cushion arranged. beneath. the-opposite IOO endof the post for cushioning the movement of the latter.

16. In al machine of the class. described, a chamber, a supporting-postmoving therein, a last carried by the upper end of saidost, and meansadjacent to the lower' end o the post for cushioning the latter.

17 In a machine of the class. described, a chamber, a post mounted tomove therein and having a portion rejected beyond the chamber, a lastcarried y that portion of the post outside the chamber, means forsustainingthe post in an elevated position, and means for cushioning thepost when depressed.

18. In a machine of theclass described a IIO shoe-support, means forraising and lowering mold for depressing said support belowsuch point ofelevation against the action of the sustaining means. v

20. In a machine of the classI described the combination with ashoe-support, of resilient means adapted to sustain said support at .acertain point of elevation, and a mold member for depressing saidsupport below such point against the action of the resilient 1o means. l21. In a machine of the class described the combination with side molds,and a shoesupport, of a sole-mold for forcing said shoesupport and itsshoe into its nal position in the side'molds.

In testimony whereof I have signed my name to this specification in thepresence of two 'subscribing witnesses.

t lMAURICE C. CLARK. Witnesses:

R. B. ,(LWANAGH,l f Jos. J. PIERANDO.

